subnet (bit / hosts) 정리

subnet (netmask) / bit / Host 

  

255.255.255.0    /24  / 254 

255.255.255.128 / 25  / 128 

255.255.255.192 / 26  / 64 

255.255.255.224 / 27  / 32 

255.255.255.240 / 28  / 16 

255.255.255.248 / 29  / 8 

255.255.255.252 / 30  / 4 

255.255.255.254 / 31  / 2 

255.255.255.255 / 32  / 1